Fuel-air control device

Abstract

The invention concerns a device for controlling the vehicles fuel-air mixture by regulating the air in the ventilation passage leading to the engine air intake from the crankcase. In a vehicle provided with a PCV valve, the device is located in the ventilation passage leading from the crankcase to the engine air intake and the device is downstream of the PCV valve. The device admits outside air to the ventilation passage to lean the gas mixture when the engine is operating at normal highway speeds or under load conditions and shuts off this flow of outside air as when the engine is running at low speeds or idling when the gas mixture need not be leaned.

I claim: 
     
       1. A device for aiding in the control of the fuel-air mixture in an internal combustion engine having a ventilation passage from the crankcase of said engine to the intake manifold, said device comprising: (a) A valve housing having a seat coupled to an air passage, said air passage adapted for communication between the ambient and said ventilation passage;   (b) a solenoid means; activated whenever the revolutions per minute of said internal combustions exceed 2000;   (c) a valve means for seating in said seat thereby preventing ambient air from flowing into said air passage, said valve means coupled to said solenoid such that upon activation, ambient air flows into said ventilation passage.   
     
     
       2. The device of claim 1, wherein a spring means is disposed in said valve housing for urging said valve means from said seat with a predetermined force. 
     
     
       3. The device of claim 1, wherein said valve means is a semi-spherical ball coupled to a piston activated by said solenoid. 
     
     
       4. The semi-spherical valve means of claim 3, formed so as to be coupled by differential means to said piston so as to be pivotal and permit proper seating even when misalignment occurs between said solenoid and said valve housing. 
     
     
       5. The device of claim 1, wherein said solenoid means is activated by a switch means, said switch means being set to be activated whenever the load conditions of said engine exceed the conditions of said engine while at 2000 RPM under no load conditions. 
     
     
       6. The switch means of claim 5, comprised of; a switch activated by a magnetic force, said switch coupled to said engine and juxtaposed to the accelerator linkage, a magnetic coupled to said accelerator linkage such that it passes said switch and activates it at a predetermined engine performance level and deactivates it whenever below said predetermined level. 
     
     
       7. The switch means of claim 5, comprised of a micro switch disposed so as to be activated by the accelerator cam at and above said predetermined performance level and deactivates it whenever below said level. 
     
     
       8. The device of claim 1, wherein said solenoid means is activated by a switch means, said switch means being set to be activated whenever the load conditions of said engine exceed the conditions of said engine while at 2000 RPM under no load conditions. 
     
     
       9. The switch means of claim 8, comprised of; a switch activated by a magnetic force, said switch coupled to said engine and juxtaposed to the accelerator linkage, a magnetic coupled to said accelerator linkage such that it passes said switch and activates it at a predetermined engine performance level and deactivates it whenever below said predetermined level. 
     
     
       10. The switch means of claim 8, comprised of a micro switch disposed so as to be activated by the accelerator cam at and above said predetermined performance level and deactivates it whenever below said level. 
     
     
       11. The switch means of claim 9, comprised of a switch activated by a magnetic force, said switch coupled to said engine and juxtaposed to the accelerator linkage, a magnetic coupled to said accelerator linkage such that it passes said switch and activates it at a predetermined engine performance level and deactivates it whenever below said predetermined level. 
     
     
       12. The switch means of claim 10, comprised of a micro switch disposed so as to be activated by the accelerator cam at and above said predetermined performance level and deactivates it whenever below said level.